Toulon must be smart to defeat Clermont at Twickenham, says Ali Williams

New Zealander made Test debut at the stadium 13 years ago and his farewell fling there in European Champions Cup final promises to be emotional• Dean Ryan: European Champions Cup final deserves a more fitting finaleIt feels like a rugby version of The Expendables. Fading action stars coming together for one last stand, seeking to prove they still have what it takes. Beyond this summer there will be no more hit-and-run jobs for Ali Williams, Bakkies Botha or Carl Hayman, all of whom are preparing to retire from their brutal profession. With a combined age of 105, their days of competitive Twick…